Which of the following should not use 'ser'?
Yo soy en la escuela hoy.
Ustedes son de los Estados Unidos.
La fiesta es a las ocho y media.

Respuesta :

Answer:

the first sentence would not use "ser"

Explanation:

The correct format for that sentence would be "yo ESTOY en la escuela hoy" which translates to I am at school today.